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In-Memory Database Archives - VoltDB
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In-Memory Database

VoltDB / In-Memory Database

In-Memory Database

In-memory database use is gaining popularity among organizations struggling to keep up with fast transactions and other forms of high velocity streaming data.When SQL databases were initially designed, memory was expensive, so rotating magnetic disks in the form of mechanical disk drives became the primary storage device for databases. While disk-based storage is still used and relied upon, the steadily decreasing price of RAM has the potential to make mechanical disks obsolete as the primary data storage layer for operational systems. Not all in-memory databases are the same. Some in-memory RDBMS technologies provide much higher performance than others when compared to traditional disk-based products. VoltDB is an in-memory transactional database for modern applications that require an unprecedented combination of data scale, volume, and accuracy.

Redis has been one of the most popular in-memory key-value stores according to Stack Overflow’s Developer Survey. The popularity of open source Redis can be attributed to the perception that Redis is a “low cost” alternative to commercial software. While the software is free to download and use, the true costs of running Redis in a production environment are unfortunately not realized in the first few months. However, as companies grow, so does their data — as well as their performance requirements – and that is when Redis runs into speed bumps. We see numerous companies running into issues with Redis at scale, where there is a significant drop in performance, and hardware costs begin to pile up. Redis is also much harder to use at scale; no transaction support across shards being the primary issue.

Not surprisingly, your business has collected a lot of data over the past few years, and you have used some analytical databases or data warehouses to organize and understand your insights. Congratulations, you have taken the 1st step with your data strategy, and produced analytics that will help drive your business!

Meanwhile, your applications need to operate in real-time to make immediate decisions on streaming data or data in motion on both your customer facing applications that drive revenue or build brand loyalty – as well as those internal applications that help your business operate efficiently, reducing bottom line costs. Using analytics directly in the applications can help apply what you have learned to automate your business workflow and remove the manual components.